The bad news is, we’re in a disgusting heat wave. The good news it, we have some very cold water coming out of Hogback. Let’s start with this graph:
As you can see, the current release temps range from a morning low of around 47 degrees, and spike at around 56 in the afternoon. This is fantastic, and very fish friendly. But wait: that doesn’t mean all is well in Collinsville. With flows on the low side — just barely into three-figures of CFS — and air temperatures in the 90s, it doesn’t take long for that water to warm up.
So: use common sense. The closer you are to Hogback, the colder the water will be. The water will be warmest from noon into evening. Carry a thermometer, and use it. If you start getting readings approaching 68 degrees, don’t fish. Head north, or fish when the sun’s not beating down on the water.
I thank you. The trout thank you. Now, let’s all do a rain dance…
currentseams.com 
all they have to do is open the tap a little and things would improve
JB, a balance must be struck, i.e. if what’s going out exceeds what’s coming in, trouble will follow. I have to confess I’m not always in agreement with their flow choices. Also, there are considerations for the flow rate that have nothing to do with fishing. Let’s hope for more rain!